Garou

Garou is a lean, athletic young man of middling height, his yellow eyes set beneath slicked-back gray hair that spikes into two sharp prongs, lending him the look of a young wolf. His everyday attire is a close-fitting black shirt, billowy white martial-arts trousers, a yellow waist sash, and tai chi slippers. As his war on heroes drags on he grows steadily more monstrous, and a long diagonal scar eventually settles permanently across his face.

His monsterization advances through claws, fangs, and armor-like skin laced with glowing veins, his tattered clothing knotted into a makeshift cape. Against Saitama he swells in size, sprouts flaming wings and horns, and grows a second pair of arms. Under the influence of God he becomes a featureless silhouette filled with stars and galaxies, wrapped in a dark blue aura, before finally reverting to his silver-haired human form with the great facial scar intact.

Garou first appears as a swaggering, vindictive antagonist consumed by hatred for heroes, quick to strike anyone who insults him. That loathing traces back to a lonely, bullied childhood in which a popular boy named Tacchan cast him as the monster in games of heroes and villains, teaching him that society always wants the monster dead. Convinced the popular always win and the hated always lose, he still keeps his own moral code, refusing to kill the heroes he fights and showing real tenderness toward children, above all the boy Tareo, whom he risks his life to protect. He is a deliberate foil to Saitama: where Saitama dreamed of being a hero, Garou aspires to be the ultimate monster, and where Saitama wins on raw power, Garou is a calculating prodigy who studies a foe before throwing a punch.

In combat he is brazen and mocking, dismissing weaker fighters as amateurs yet crediting genuine skill, and he prepares meticulously, poring over Hero Association data to sidestep dangerous attacks. His grand ambition is to embody Absolute Evil, a monster so terrifying that humanity must unite against him, ending conflict through shared fear. When God's power floods into him he grows crueler, breaking his own rule by killing Genos to provoke Saitama. His defeat brings crushing remorse, above all over accidentally killing Tareo, and he ultimately entrusts Saitama with a time-travel technique to undo the tragedy, even as God strips away his power and life.

Even as a pure human, Garou was Bang's finest student and a martial-arts genius, defeating scores of heroes and outclassing S-Class fighters like Tanktop Master and Metal Bat through superior technique. His defining trait is Accelerated Development, an explosive growth rate that lets him surge in power mid-battle, while his super-learning lets him absorb and improve on any style he sees. From Bang he inherited the Water Stream Rock Smashing Fist, which redirects an opponent's blows, and he fuses it with Bomb's own Whirlwind Iron Cutting Fist into combined techniques that normally demand two users. Sharp senses and an unbreakable will complete a fighter who keeps rising no matter how close to death he is pushed.

Repeatedly driven to the brink and back, Garou begins to monsterize until Gyoro Gyoro dubs him a Half-Monster. In this state he kills Royal Ripper in one strike, endures Overgrown Rover and Monster King Orochi, and grows strong enough to trade blows with Superalloy Darkshine's strongest bazooka. Gaining armor-like skin, regeneration, and afterimages, he defeats Bomb, his master Bang, the Dragon-level Fuhrer Ugly, and Platinum Sperm, then splits the colossal Sage Centipede clean in two, from orbit all the way down to the ground. Facing Saitama he mutates further, gaining wings, extra arms, and energy beams, and unleashes his Extreme Fa Jin, a strike that raises a landmass on the far side of the planet.

Touched by the power of God, Garou assumes Awakened Garou: Cosmic Fear Mode, a cosmic-bodied form of staggering power. His copying ability now reaches supernatural feats, replicating Blast's portals and gravity, emitting lethal radiation, and triggering nuclear fission and gamma ray bursts. Through Mode: Saitama he borrows Saitama's own striking power, matching Consecutive Normal Punches and even a Serious Punch whose collision births a world-threatening shockwave, and he grasps a rough time-travel technique. In the end Saitama's ever-accelerating growth outpaces him and his divine power fades, yet even as a mere human afterward he casually destroys the Dragon-level threat Hellmon.